Amongst the blogs I receive and enjoy, is that of
Wen Redmond, USA. In a recent blog she demonstrated the use of sponge rollers. I have tried a couple of her ideas and found them easy, and the outcomes definitely worthwhile. She recommends using 'old' sponge rollers which may have gotten damaged from over use.
Here are a couple of my own attempts:

Top: an old split sponge roller which has been 'attacked' with sharp pointed scissors, and below, a hot glue gun used to glue over the sponge roller.

The dried glue roller certainly gives an all-over textured surface. I prefer the left side where I have pressed very lightly and avoided the straight edges of the roller.

The 'attacked' roller I really like. I love the way it can be altered so that it doesn't print 'edges'.
Both experiments using a textile paint.
I should now be back from my week in the Chatham Islands.